Where does he get this from

Me: Matthew, come down for dinner!

Matthew: Hold on, Da!

Me: Matthew - come down! I haven't seen you *sob* all day *sob* *sob*. I need my Matthew *sob, sob*.

Matthew: Not right now, Da! I'm busy and be down soon.

My Lovely Wife: *Snerk* I wonder where he gets that from.

Me: Matthew!

Matthew: Coming!

*Later on*

Me: Hey, you guys have no school on Friday. And I don't have to work that Friday. Maybe we should go to the movies.

Kids: Yaaaaay!

Me: How about Ratatoille?

Kids: No - we already saw that!

Me: Well, I haven't!

Kids: Sucks to be you!

MLW: *snerk*

Me: They totally get this attitude and sarcasm from you, you know.

Emily: Nuh-uh. Mommy says that all of our sass comes from you!

Me: ...